Class DumpReaderAddressSpace

java.lang.Object

com.ibm.dtfj.addressspace.CommonAddressSpace

com.ibm.dtfj.addressspace.DumpReaderAddressSpace

All Implemented Interfaces:

IAbstractAddressSpace

public class DumpReaderAddressSpace
extends CommonAddressSpace

Constructor Summary

Constructors

Constructor	Description
DumpReaderAddressSpace(MemoryRange[] ranges, DumpReader reader, boolean isLittleEndian, boolean is64Bit)

Method Summary

Modifier and Type	Method	Description
int	getBytesAt(int asid, long address, byte[] buffer)
boolean	isExecutable(int asid, long address)
boolean	isReadOnly(int asid, long address)
boolean	isShared(int asid, long address)

Methods declared in class CommonAddressSpace

_residentRange, bytesPerPointer, compareAddress, findPattern, findWhichMemoryRange, getByteAt, getByteOrder, getIntAt, getLongAt, getMemoryBytes, getMemoryBytes, getMemoryRanges, getPointerAt, getShortAt

Modifier and Type	Method	Description
protected MemoryRange	_residentRange(int asid, long address)
int	bytesPerPointer(int asid)	Provided so that callers can determine more complicated memory geometry than what can be expressed with offsets and the above scalar data readers.
protected static int	compareAddress(int lasid, long lhs, int rasid, long rhs)
long	findPattern(byte[] whatBytes, int alignment, long startFrom)	This method is provided to appease JExtract by emulating part of the old API which is used by the JExtract natives.
protected static int	findWhichMemoryRange(int asid, long addr, MemoryRange[] ranges, Integer lastRange, boolean doLinearIfNotFound)	This searches memory ranges for an addr using a binary chop and returns an int indicating the memory range or -1 if address is not within any memory range......
byte	getByteAt(int asid, long address)
ByteOrder	getByteOrder()	Return the byte order of this address space.
int	getIntAt(int asid, long address)
long	getLongAt(int asid, long address)
byte[]	getMemoryBytes(int asid, long vaddr, int size)
byte[]	getMemoryBytes(long vaddr, int size)	This method is provided to appease JExtract by emulating part of the old API which is used by the JExtract natives.
Iterator	getMemoryRanges()
long	getPointerAt(int asid, long address)
short	getShortAt(int asid, long address)

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DumpReaderAddressSpace

public DumpReaderAddressSpace(MemoryRange[] ranges,
 DumpReader reader,
 boolean isLittleEndian,
 boolean is64Bit)

Method Details

isExecutable

public boolean isExecutable(int asid,
 long address)
                     throws MemoryAccessException

Parameters:

asid - an address space ID

address - a byte-offset into the asid

Returns:

true if this memory address is within an executable page

Throws:

MemoryAccessException - if the memory cannot be read

isReadOnly

public boolean isReadOnly(int asid,
 long address)
                   throws MemoryAccessException

Parameters:

asid - an address space ID

address - a byte-offset into the asid

Returns:

true if write access to this memory address was disabled in the image

Throws:

MemoryAccessException - if the memory cannot be read

isShared

public boolean isShared(int asid,
 long address)
                 throws MemoryAccessException

Parameters:

asid - an address space ID

address - a byte-offset into the asid

Returns:

true if this memory address is shared between processes

Throws:

MemoryAccessException - if the memory cannot be read

getBytesAt

public int getBytesAt(int asid,
 long address,
 byte[] buffer)
               throws MemoryAccessException

Parameters:

asid - an address space ID

address - a byte-offset into the asid

buffer - a byte array to receive the bytes

Returns:

the number of bytes read into buffer

Throws:

MemoryAccessException - if the memory cannot be read